B3311331313231311331322331333132313231333133313311211113313222112323221   >>    B331133131323131133132233133313231323133313331331121111331322211232322   <<    B3311331313231311331322331333132313231333133313311211113313222112323223   >>      B3311331313231311331322331333132313231333133313311211113313222112323222   >>